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-rw-r--r--Documentation/vm/page_owner.rst3
-rw-r--r--tools/vm/page_owner_sort.c112
2 files changed, 99 insertions, 16 deletions
diff --git a/Documentation/vm/page_owner.rst b/Documentation/vm/page_owner.rst
index 523bf3419512..25622c715823 100644
--- a/Documentation/vm/page_owner.rst
+++ b/Documentation/vm/page_owner.rst
@@ -183,6 +183,7 @@ For --sort option:
T txt full text of block
ft free_ts timestamp of the page when it was released
at alloc_ts timestamp of the page when it was allocated
+ ator allocator memory allocator for pages
For --curl option:
@@ -192,4 +193,4 @@ For --curl option:
n name task command name
f free whether the page has been released or not
st stacktrace stack trace of the page allocation
-
+ ator allocator memory allocator for pages
diff --git a/tools/vm/page_owner_sort.c b/tools/vm/page_owner_sort.c
index a32e446e5bb2..fa2e4d2a9d68 100644
--- a/tools/vm/page_owner_sort.c
+++ b/tools/vm/page_owner_sort.c
@@ -39,6 +39,7 @@ struct block_list {
int page_num;
pid_t pid;
pid_t tgid;
+ int allocator;
};
enum FILTER_BIT {
FILTER_UNRELEASE = 1<<1,
@@ -51,11 +52,19 @@ enum CULL_BIT {
CULL_PID = 1<<2,
CULL_TGID = 1<<3,
CULL_COMM = 1<<4,
- CULL_STACKTRACE = 1<<5
+ CULL_STACKTRACE = 1<<5,
+ CULL_ALLOCATOR = 1<<6
+};
+enum ALLOCATOR_BIT {
+ ALLOCATOR_CMA = 1<<1,
+ ALLOCATOR_SLAB = 1<<2,
+ ALLOCATOR_VMALLOC = 1<<3,
+ ALLOCATOR_OTHERS = 1<<4
};
enum ARG_TYPE {
ARG_TXT, ARG_COMM, ARG_STACKTRACE, ARG_ALLOC_TS, ARG_FREE_TS,
- ARG_CULL_TIME, ARG_PAGE_NUM, ARG_PID, ARG_TGID, ARG_UNKNOWN, ARG_FREE
+ ARG_CULL_TIME, ARG_PAGE_NUM, ARG_PID, ARG_TGID, ARG_UNKNOWN, ARG_FREE,
+ ARG_ALLOCATOR
};
enum SORT_ORDER {
SORT_ASC = 1,
@@ -89,15 +98,20 @@ static int cull;
static int filter;
static bool debug_on;
-int read_block(char *buf, int buf_size, FILE *fin)
+static void set_single_cmp(int (*cmp)(const void *, const void *), int sign);
+
+int read_block(char *buf, char *ext_buf, int buf_size, FILE *fin)
{
char *curr = buf, *const buf_end = buf + buf_size;
while (buf_end - curr > 1 && fgets(curr, buf_end - curr, fin)) {
- if (*curr == '\n') /* empty line */
+ if (*curr == '\n') { /* empty line */
return curr - buf;
- if (!strncmp(curr, "PFN", 3))
+ }
+ if (!strncmp(curr, "PFN", 3)) {
+ strcpy(ext_buf, curr);
continue;
+ }
curr += strlen(curr);
}
@@ -146,6 +160,13 @@ static int compare_tgid(const void *p1, const void *p2)
return l1->tgid - l2->tgid;
}
+static int compare_allocator(const void *p1, const void *p2)
+{
+ const struct block_list *l1 = p1, *l2 = p2;
+
+ return l1->allocator - l2->allocator;
+}
+
static int compare_comm(const void *p1, const void *p2)
{
const struct block_list *l1 = p1, *l2 = p2;
@@ -192,6 +213,8 @@ static int compare_cull_condition(const void *p1, const void *p2)
return compare_comm(p1, p2);
if ((cull & CULL_UNRELEASE) && compare_release(p1, p2))
return compare_release(p1, p2);
+ if ((cull & CULL_ALLOCATOR) && compare_allocator(p1, p2))
+ return compare_allocator(p1, p2);
return 0;
}
@@ -395,11 +418,42 @@ static int get_arg_type(const char *arg)
return ARG_FREE_TS;
else if (!strcmp(arg, "alloc_ts") || !strcmp(arg, "at"))
return ARG_ALLOC_TS;
+ else if (!strcmp(arg, "allocator") || !strcmp(arg, "ator"))
+ return ARG_ALLOCATOR;
else {
return ARG_UNKNOWN;
}
}
+static int get_allocator(const char *buf, const char *migrate_info)
+{
+ char *tmp, *first_line, *second_line;
+ int allocator = 0;
+
+ if (strstr(migrate_info, "CMA"))
+ allocator |= ALLOCATOR_CMA;
+ if (strstr(migrate_info, "slab"))
+ allocator |= ALLOCATOR_SLAB;
+ tmp = strstr(buf, "__vmalloc_node_range");
+ if (tmp) {
+ second_line = tmp;
+ while (*tmp != '\n')
+ tmp--;
+ tmp--;
+ while (*tmp != '\n')
+ tmp--;
+ first_line = ++tmp;
+ tmp = strstr(tmp, "alloc_pages");
+ if (tmp) {
+ if (tmp && first_line <= tmp && tmp < second_line)
+ allocator |= ALLOCATOR_VMALLOC;
+ }
+ }
+ if (allocator == 0)
+ allocator = ALLOCATOR_OTHERS;
+ return allocator;
+}
+
static bool match_num_list(int num, int *list, int list_size)
{
for (int i = 0; i < list_size; ++i)
@@ -437,7 +491,7 @@ static bool is_need(char *buf)
return true;
}
-static void add_list(char *buf, int len)
+static void add_list(char *buf, int len, char *ext_buf)
{
if (list_size != 0 &&
len == list[list_size-1].len &&
@@ -471,6 +525,7 @@ static void add_list(char *buf, int len)
list[list_size].stacktrace++;
list[list_size].ts_nsec = get_ts_nsec(buf);
list[list_size].free_ts_nsec = get_free_ts_nsec(buf);
+ list[list_size].allocator = get_allocator(buf, ext_buf);
list_size++;
if (list_size % 1000 == 0) {
printf("loaded %d\r", list_size);
@@ -496,12 +551,16 @@ static bool parse_cull_args(const char *arg_str)
cull |= CULL_STACKTRACE;
else if (arg_type == ARG_FREE)
cull |= CULL_UNRELEASE;
+ else if (arg_type == ARG_ALLOCATOR)
+ cull |= CULL_ALLOCATOR;
else {
free_explode(args, size);
return false;
}
}
free_explode(args, size);
+ if (sc.size == 0)
+ set_single_cmp(compare_num, SORT_DESC);
return true;
}
@@ -556,6 +615,8 @@ static bool parse_sort_args(const char *arg_str)
sc.cmps[i] = compare_free_ts;
else if (arg_type == ARG_TXT)
sc.cmps[i] = compare_txt;
+ else if (arg_type == ARG_ALLOCATOR)
+ sc.cmps[i] = compare_allocator;
else {
free_explode(args, size);
sc.size = 0;
@@ -588,6 +649,19 @@ static int *parse_nums_list(char *arg_str, int *list_size)
return list;
}
+static void print_allocator(FILE *out, int allocator)
+{
+ fprintf(out, "allocated by ");
+ if (allocator & ALLOCATOR_CMA)
+ fprintf(out, "CMA ");
+ if (allocator & ALLOCATOR_SLAB)
+ fprintf(out, "SLAB ");
+ if (allocator & ALLOCATOR_VMALLOC)
+ fprintf(out, "VMALLOC ");
+ if (allocator & ALLOCATOR_OTHERS)
+ fprintf(out, "OTHERS ");
+}
+
#define BUF_SIZE (128 * 1024)
static void usage(void)
@@ -614,8 +688,8 @@ static void usage(void)
int main(int argc, char **argv)
{
FILE *fin, *fout;
- char *buf;
- int ret, i, count;
+ char *buf, *ext_buf;
+ int i, count;
struct stat st;
int opt;
struct option longopts[] = {
@@ -724,16 +798,18 @@ int main(int argc, char **argv)
list = malloc(max_size * sizeof(*list));
buf = malloc(BUF_SIZE);
- if (!list || !buf) {
+ ext_buf = malloc(BUF_SIZE);
+ if (!list || !buf || !ext_buf) {
fprintf(stderr, "Out of memory\n");
exit(1);
}
for ( ; ; ) {
- ret = read_block(buf, BUF_SIZE, fin);
- if (ret < 0)
+ int buf_len = read_block(buf, ext_buf, BUF_SIZE, fin);
+
+ if (buf_len < 0)
break;
- add_list(buf, ret);
+ add_list(buf, buf_len, ext_buf);
}
printf("loaded %d\n", list_size);
@@ -757,9 +833,11 @@ int main(int argc, char **argv)
qsort(list, count, sizeof(list[0]), compare_sort_condition);
for (i = 0; i < count; i++) {
- if (cull == 0)
- fprintf(fout, "%d times, %d pages:\n%s\n",
- list[i].num, list[i].page_num, list[i].txt);
+ if (cull == 0) {
+ fprintf(fout, "%d times, %d pages, ", list[i].num, list[i].page_num);
+ print_allocator(fout, list[i].allocator);
+ fprintf(fout, ":\n%s\n", list[i].txt);
+ }
else {
fprintf(fout, "%d times, %d pages",
list[i].num, list[i].page_num);
@@ -769,6 +847,10 @@ int main(int argc, char **argv)
fprintf(fout, ", TGID %d", list[i].pid);
if (cull & CULL_COMM || filter & FILTER_COMM)
fprintf(fout, ", task_comm_name: %s", list[i].comm);
+ if (cull & CULL_ALLOCATOR) {
+ fprintf(fout, ", ");
+ print_allocator(fout, list[i].allocator);
+ }
if (cull & CULL_UNRELEASE)
fprintf(fout, " (%s)",
list[i].free_ts_nsec ? "UNRELEASED" : "RELEASED");
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-25 21:57:30 +0000